Spray gun



FIG. 1 is a perspective view looking downwardly from the right side of the rear of a spray gun in accordance with my design;

FIG. 2 is a perspective view looking upwardly from the right side of the front thereof;

FIG. 3 is a right side view thereof, the left side view thereof being a mirror image of the right side view;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof. 

CLAIM The ornamental design for a spray gun, as shown and described. 